JP2018207264A - Information processor and information processing method - Google Patents

Abstract

To provide an information processor which re-establishes connection in a short time by simple procedure and can perform stable high-speed data communication even when temporary disconnection occurs in an information processor which transmits and receives data after connection between mobile communication devices is established, and an information processing method.SOLUTION: An information processor includes: a high-speed communication part 106; a low-speed communication unit 105; a communication system control part 104 distributing information related to connection establishment and information related to data communication; a high-speed communication connection control unit 102 establishing connection; an equipment information recording part 107 recording information about equipment; a content storage part 110 storing transmission/reception data; a data communication part 103 performing transmission/reception processing of information; a reception data processing part 109 processing data; and a transmission data processing part 108 processing a transmission request of information necessary for high-speed communication and a data transmission request from the content storage part 110 and transferring it to the data communication part 103.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information processing apparatus and an information processing method used in a mobile ad hoc network (MANET, Mobile Ad Hoc Network) composed only of mobile radio communication devices (terminals), and more specifically, as a network construction means. In the information processing device equipped with Bluetooth Classic (registered trademark, BC) capable of high-speed communication and Bluetooth Low Energy (registered trademark, BLE) developed as an ultra-low power consumption type, the BC method and BLE method are used together. The present invention relates to an information processing apparatus and an information processing method for realizing high-speed connection establishment between terminals and high-speed data communication between terminals.

  MANET, which consists only of mobile wireless communication devices (terminals) such as mobile phones and smartphones, is a network constructed without the need for communication infrastructure such as base stations. Attempts have been made to apply it to means for sharing regional information.

  In MANET, the network is built and managed based on the establishment of connections between terminals, so it is important to establish an efficient connection between terminals, but an information processing device that transmits and receives data after the connection between terminals is established. When constructing MANET, it is difficult to realize stable high-speed data communication because the connection between terminals may be temporarily disconnected due to the movement of terminals or the appearance of obstacles, and it takes time to establish the connection. There is a problem.

  For communication between terminals in MANET, Bluetooth Classic (registered trademark, BC) capable of high-speed communication and Bluetooth Low Energy (registered trademark, BLE) developed as an ultra-low power consumption type are used. There is.

  The BC method is capable of an effective communication speed of 2.1 Mbps, but Discovery A terminal periodically transmits packets for detecting peripheral terminals, and Discoverable terminal B that receives the packets transmits response packets. By doing so, the connection between terminal A and terminal B is established. At this time, in the BC method, one terminal can only take one of the states of Discovery and Discoverable, and the Discovery state and the Discoverable state are changed and set randomly at each terminal. Non-Patent Document 1 describes that a combination of states that cannot be found occurs and the possibility of establishing a connection decreases.

In the BLE method, terminal B, which is a peripheral corresponding to a server, broadcasts an Advertising packet. At this time, the terminal A, which is the Central corresponding to the client, detects the advertising packet by scanning the peripheral terminals, and the terminal A completes the detection of the terminal B. In the BLE method, one terminal can take both Central and Peripheral states at the same time, so the probability of successful detection of peripheral terminals is higher than in the BC method, and an efficient connection can be established. However, Non-Patent Document 2 describes that the effective communication speed in the BLE method is about 270 kbps, which is significantly slower than the BC method and is not suitable for high-speed communication of large data.

  As a technique for solving the above problems and establishing a high-efficiency connection between terminals and high-speed data communication at the same time, a connection between terminals is established by the BLE method, and then the BC method is established between the terminals. A method for exchanging information necessary for communication is described in Non-Patent Document 3. Although the time required for establishing the connection between terminals has been reduced from about 20 seconds in the BC method to about 5 seconds, considering that the communicable distance in the BC method is about several tens of meters to 100 meters, it can be moved by car etc. It is not enough to apply to the establishment of connection between terminals.

Bluetooth SIG, “Specification of the bluetooth system-v2. 1+ EDR,” 2007. Bluetooth SIG, “Specification of the bluetooth system v4.0.” 2014. Yuya Minami, Shingo Ninagawa, Eitaro Kawano, Yoshiaki Kakuda, “A Highly Available Connection Establishment Method by Combining Bluetooth Classic and Bluetooth Low Energy,” IEICE Technical Report, vol.115, no.507, pp. 67 — 71, March 2016.

  The present invention has been made in view of the above points. Even if a temporary disconnection of the connection between terminals due to the movement of the terminal or the appearance of an obstacle occurs, the low speed communication in the BLE system and the high speed in the BC system are performed. An object of the present invention is to provide an information processing apparatus and an information processing method that enable stable data transmission and reception by combining communications.

  In order to achieve such an object, an information processing apparatus according to the present invention is an information processing apparatus that transmits and receives data after a connection between mobile wireless communication devices (terminals) is established, and performs high-speed communication with a terminal that aims to establish a connection. A high-speed communication unit that performs communication, a low-speed communication unit that performs low-speed communication with the terminal, and a communication method control unit that distributes information related to connection establishment and information related to data communication acquired by the low-speed communication unit or the high-speed communication unit A high-speed communication connection control unit that establishes a connection with the terminal based on information on the terminal acquired from the high-speed communication unit, and a device information recording unit that records information about the terminal necessary for establishing a connection with the terminal A content storage unit that stores transmission / reception data with the terminal, data acquired from the high-speed communication unit, and the low A data communication unit that performs transmission / reception processing of information necessary for high-speed communication acquired from the communication unit, and a transmission request for information necessary for high-speed communication from the device information recording unit and a data transmission request from the content storage unit And processing the data received from the data communication unit and the information necessary for high-speed communication, and the data is transferred to the content storage unit and required for high-speed communication. The information includes a received data processing unit that transfers the information to the high-speed communication connection control unit.

  In order to achieve the above object, an information processing method of the present invention is an information processing method for a client that accepts establishment of a connection in an information processing apparatus that transmits and receives data after a connection between terminals is established. Searching advertisement information from a peripheral terminal in the communication unit, detecting advertisement information in the low-speed communication unit, establishing a connection with a peripheral terminal in the high-speed communication connection control unit, and in the low-speed communication unit A process of repeatedly searching for advertisement information if advertisement information is not detected.

  Further, the information processing method of the present invention is an information processing method for a server that requests establishment of a connection in the low-speed communication unit in an information processing apparatus that transmits and receives data after a connection between terminals is established. The communication unit includes a process of transmitting advertisement information to a peripheral terminal, and the high-speed communication connection control unit receives a device information of the peripheral terminal and establishes a connection with the peripheral terminal.

  Further, the information processing method of the present invention is an information processing method for a server that requests establishment of a connection in the low-speed communication unit in an information processing apparatus that transmits and receives data after a connection between terminals is established. In the communication unit, the advertisement information transmitted to the peripheral terminal is transmitted including its own terminal device information.

According to the information processing apparatus and the information processing method of the present invention, in the information processing apparatus that transmits and receives data after the connection between the terminals is established, the BLE method that facilitates the establishment of the connection between the terminals in a short time and the high speed By using the BC method that allows data transmission and reception, even if the connection between terminals is temporarily disconnected due to movement of the terminal or the appearance of an obstacle, the connection is re-established in a short time with a simple procedure and stable. High-speed data communication can be realized.

It is a block diagram which shows an example of a structure of embodiment of the information processing apparatus which concerns on this invention. 6 is a flowchart illustrating an example of an information processing method for a client that accepts establishment of a connection in the information processing method according to the present invention. 6 is a flowchart illustrating an example of an information processing method of a server that requests establishment of a connection in the information processing method according to the present invention. It is a sequence chart showing information exchange between the client and server in an embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of the information processing apparatus. The information processing apparatus 10 is a mobile wireless communication device such as a smartphone or a tablet. The device 2 is a mobile radio communication device such as a similar smartphone or tablet existing around the information processing apparatus 10. The information processing apparatus 10 establishes a communication connection (connection) by exchanging the device 2 and the Bluetooth address, authentication key, encryption key, and the like of the device 2. After the connection is established, the information processing apparatus 10 and the device 2 communicate information by Bluetooth communication.

The low-speed communication unit 105 performs communication using Bluetooth Low Energy (BLE). The high-speed communication unit 106 performs communication using Bluetooth Classic (BC). The low-speed communication unit 105 performs transmission and detection of advertisement information (Advertising) in response to a request from the communication method control unit 104. The low-speed communication unit 105 has a lower communication speed than the high-speed communication unit 106, but consumes less power. In addition, the high-speed communication unit 106 has a higher communication speed than the low-speed communication unit 105, but the communication power consumption is large.

In the present embodiment, communication performed by each unit of the information processing apparatus 10 with the device 2 is performed via the low-speed communication unit 105 or the high-speed communication unit 106. Communication performed by each unit of the information processing apparatus 10 with the device 2 includes communication related to connection establishment and data communication. A low speed communication unit and a high speed communication connection control unit are used for connection establishment, and only the high speed communication unit 106 is used for data communication.

The communication system control unit 104 distributes information related to low-speed communication and high-speed communication connection establishment and information related to data transmission / reception. Information regarding the low-speed communication is transferred to the low-speed communication unit 105. Information regarding the establishment of a high-speed communication connection is transferred to the high-speed communication connection control unit 102. Information relating to data transmission / reception is transferred to the data communication unit 103.

The device information recording unit 107 manages information related to low-speed communication and high-speed communication of the information processing apparatus 10. As an example of managed information, there is a Bluetooth address. In the present embodiment, information necessary for high-speed communication between devices is transmitted using low-speed communication to establish a high-speed communication connection between the information processing apparatus 10 and the device 2.

The high-speed communication connection control unit 102 controls establishment of a connection used for BC communication. The high-speed communication connection control unit 102 manages the state (connected / disconnected) related to the connection with the device 2, and exchanges communication information (Bluetooth address) necessary for communication between terminals to process the information processing device 10. And establish a communication connection between device 2 and device 2. The high-speed communication connection control unit 102 performs all processing related to the connection establishment of high-speed communication with the device 2 and the like. When the high-speed communication connection control unit 102 receives a connection establishment request from the device 2, the high-speed communication connection is established between the information processing apparatus 10 and the device 2 based on the received information.

The data communication unit 103 processes information related to data communication with the device 2 using low-speed communication and high-speed communication. Data received from the device 2 is transferred to the received data processing unit 109. Further, the information transferred from the transmission data processing unit 108 is transferred to the communication method control unit 104 as transmission data to the device 2.

The transmission data processing unit 108 processes a transmission request for information necessary for high-speed communication between devices from the device information recording unit 107 and a transmission request for content data from the content storage unit 110, and transfers the request to the data communication unit 103. As a result, information is transmitted to the device 2 via the low-speed communication unit 105 or the high-speed communication unit 106.

The received data processing unit 109 processes the data transferred from the data communication unit 103. The information transferred from the data communication unit 103 includes information necessary for high-speed communication between the content data and the device. The content data is transferred to the content storage unit 110, and information necessary for high-speed communication between devices is transferred to the high-speed communication connection control unit 102. The high-speed communication connection control unit 102 that has received information necessary for high-speed communication between devices transmits a connection establishment request for high-speed communication to the device 2 based on the received information.

The content storage unit 110 stores content information created in the information processing apparatus 10, the device 2, and the like. When a content transmission request from the information processing apparatus 10 to the device 2 is generated, the content information to be transmitted is transferred to the transmission data processing unit 108. When the content information from the device 2 is received from the received data processing unit 109, the content information is stored in the storage unit.

FIG. 2 is a flowchart showing an information processing method of a client that accepts establishment of a connection. Hereinafter, a description will be given with reference to the drawings.
Step S101: The low speed communication unit 105 and the high speed communication unit 106 are activated.
Step S102: The low speed communication unit 105 starts searching for the device 2 that is transmitting the advertising information (Advertising packet).
Step S103: When the low-speed communication unit 105 detects the advertisement information, the process proceeds to step S105. On the other hand, if the advertisement information cannot be detected within a certain time, the process proceeds to step S104.
Step S104: The low-speed communication unit 105 ends the search for the device 2 that is transmitting the advertisement information.
Step S105: The high-speed communication connection control unit 102 determines whether the device 2 detected in step S103 is a device that has already established a connection. If the device is not connected, the process proceeds to step S106. On the other hand, if the device has already established a connection, the process returns to step S103.
Step S106: A connection establishment request including its own device information stored in the device information recording unit 107 for the device 2 that is determined by the high-speed communication connection control unit 102 that the connection has not been established in step S105. Send.
Step S107: Wait for a request acceptance signal from the device 2 for a predetermined time after transmitting the connection establishment request including the device information of itself. When the request acceptance signal from the device 2 is received, the process proceeds to step S108, and when it cannot be received, the process returns to S103.
Step S108: The high-speed communication connection control unit 102 establishes a high-speed communication connection with the device 2.

FIG. 3 is a flowchart illustrating an information processing method of a server that requests establishment of a connection. Hereinafter, a description will be given with reference to the drawings.
Step S21: The low-speed communication unit 105 and the high-speed communication unit 106 are activated.
Step S22: The low-speed communication unit 105 starts transmitting advertisement information (Advertising packet).
At this time, the advertisement information is transmitted including its own terminal device information.
Step S23: If the high-speed communication unit 106 has received a connection establishment request for high-speed communication from the device 2, the process proceeds to step S24. On the other hand, if a connection establishment request for high-speed communication cannot be received, step S23 is repeatedly executed to wait for reception of a connection establishment request.
Step S24: Based on the received device information of the device 2, the fact that the request for establishing a high-speed communication connection is accepted is transmitted to the device 2, and a high-speed communication connection is established with the device 2.

FIG. 4 is a sequence chart showing information exchange regarding connection establishment between the client (terminal A) and the server (terminal B). Hereinafter, a description will be given with reference to the drawings.
Step S31: Advertising information (Advertising packet) broadcasted by terminal B (server) is detected by terminal A (client).
Step S32: The terminal A transmits a BC connection establishment request to the terminal B based on the detected advertisement information.
Step S33: After receiving the BC connection establishment request from terminal A, terminal B transmits to terminal A that the request is accepted.
Step S34: A BC connection is established between the terminal A and the terminal B.

According to the information processing apparatus and the information processing method of the present invention, stable high-speed data by combining low-speed communication and high-speed communication even if a temporary disconnection occurs due to movement of the terminal or appearance of an obstacle in the connection between the terminals. Communication is possible.
The conventional method shown in the prior art document and the proposed method shown in the present invention were implemented in a terminal and a comparative experiment was performed. Two terminals were used so that each other's terminals were within communication range. In order to measure the time until the connection between terminals is established, the function to automatically disconnect the connection between terminals after a random time was implemented. The time for disconnecting the connection is randomly determined from the time included in the disconnection time interval set in advance. For example, when the disconnection time interval is set to 10 to 20 seconds, the number of seconds is randomly determined from the time from 10 to 20 seconds, and the connection is disconnected after the time determined from the establishment of the connection. This function actually moves the terminal in an environment where the connectivity of the wireless communication between MANET terminals frequently changes due to the movement of the terminal or the temporary disconnection of the connection due to the appearance of an obstacle. Simulate without letting. In addition, in an environment where connectivity between MANET terminals changes frequently, we measured the operating time during which data can be transmitted and received between terminals within a certain period of time, and measured the MANET operating rate.

  In each method, the time required for connection was measured 200 times, and the average value was calculated. The average time of the conventional method was about 24 seconds, and the average time of the proposed method was about 2 seconds. From the experimental results, it was confirmed that the proposed method can reduce the time required to establish a connection by approximately 92% compared to the conventional method. In each method, the operation time for data transmission / reception was measured in 15 minutes. The operation rate for data transmission / reception in the conventional method was about 54%, and the operation rate for data transmission / reception in the proposed method was about 91%.

  The present invention is a high-speed MANET network construction that is effective as a means of collecting emergency reports, evacuation guidance, damage information, etc. when a fixed base station or wired communication network becomes unavailable during a disaster such as an earthquake, tsunami, or typhoon. It is effective as a means to make it easier. It can also be applied to regional information propagation means using MANET.

2 Equipment
10 Information processing equipment
102 High-speed communication connection controller
103 Data communication section
104 Communication system controller
105 Low-speed communication unit
106 High-speed communication unit
107 Device information recording section
108 Transmission data processor
109 Receive data processor
110 Content storage

Claims (4)

An information processing apparatus that transmits and receives data after a connection is established,
A high-speed communication unit that performs high-speed communication with a mobile wireless communication device; and
A low-speed communication unit that performs low-speed communication with the mobile wireless communication device;
A communication system control unit that distributes information related to data communication and information related to connection establishment with the mobile wireless communication device acquired by the low-speed communication unit or the high-speed communication unit;
A high-speed communication connection control unit that establishes a connection with the mobile radio communication device based on the information of the mobile radio communication device acquired from the high-speed communication unit;
A device information recording unit for recording information related to the mobile wireless communication device necessary for establishing a connection with the mobile wireless communication device;
A content storage unit for storing transmission / reception data with the mobile wireless communication device;
A data communication unit for performing transmission / reception processing of data necessary for high-speed communication acquired from the high-speed communication unit and data acquired from the low-speed communication unit;
A transmission data processing unit that processes a transmission request for information necessary for high-speed communication from the device information recording unit and a transmission request for data from the content storage unit, and transfers the request to the data communication unit;
Receive data processing for processing data received from the data communication unit and information necessary for high-speed communication, transferring data to the content storage unit, and transferring information necessary for high-speed communication to the high-speed communication connection control unit And
An information processing apparatus comprising: An information processing method for a client that accepts establishment of a connection in an information processing apparatus that transmits and receives data after the connection is established,
In the low-speed communication unit, searching for advertising information from surrounding mobile wireless communication devices,
If the advertisement information is not detected in the low-speed communication unit, repeatedly performing a search for the advertisement information,
A process of determining whether or not a connection has already been established in the high-speed communication connection control unit when the advertisement information is detected;
When a connection is not established, a process of transmitting a connection establishment request from the high-speed communication unit to the peripheral mobile wireless devices;
Information processing method characterized by comprising An information processing method for a server that requests establishment of a connection in an information processing device that transmits and receives data after the connection is established,
A process of transmitting advertising information to surrounding mobile wireless communication devices in the low-speed communication unit;
When a connection establishment request is received from a peripheral device that has detected the advertisement information, a signal for accepting a connection establishment request is transmitted from the high-speed communication unit, and a connection is established in the high-speed communication connection control unit When,
An information processing method characterized by comprising: 4. The information processing method according to claim 3, wherein the low-speed communication unit transmits the advertisement information to be transmitted to peripheral mobile wireless communication devices including its own device information.

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